I don't think he's talking about recovering the loss, but about a wagering amount. If someone bets with a high chance, they're going to accumulate a far greater total wagaring amount than someone who bets with a lower chance. At least in theory. Assuming he doesn't lose everything in his first few bets.

Yes,,, a strategy I sometimes use just to increase my wager, usually in competitions or just to get a few level bumps in a short time. I remember reading someone's strategy for level increase before and tried it: do martingale to get a small 1% profit on bankroll, then divide up that 1% into smaller bets at max win chance and just roll it all until you lose. Rinse and repeat. Not risk free but it does let you get a wagering amount with smaller bankrolls:)